Concrete-block-molding machine



C. H. HOGLUND CONCRETE BLOCK MOLDING MACHINE Filed March 12 1921 2 Sheets-Sheet l INVENTOR. C.-

May 8, 1923.

C.l1.PKDGLJJN[J CONCRETE BLOCK MOLDING MACHINE 2 Sheets-Sheet 2 Filed March 12. 1921 E' IIII WITNESS: .INVENTOR.

I C If ma M x W 6&3? 333;?

Patented May 8, 1923.

Wires STATES can; rrENaIK noenunn, or return, ninnnsorra.

CONCB -BLO LDlNG M CHQ N L Application filed la a 12, 19,21, s fi ito. 451,757.

T 0 all whom, dim-cry concern:

Be it known that I, CARL Hanan: Hoe- LUND, a citizen of Sweden, residing at Duluth, in the county of St. Louis and btate of Minnesota, have invented certain new and useful Improvements in Concrete- Block-Molding Machines, of which the following is a specification.

This invention relates to improvements in machines for molding concrete building blocks and the like and its object is to provide a simple practical machine of this type that is adapted for rapid, continuous and efficient operation, and that can be operated by any person of ordinary intelligence.

IVith the foregoing and other ob ects in view the invention consists in the combination and arrangement ,of parts to be hereinafter fully described, pointed out in the appended claim and illustrated in the accompanying drawings which form a part of this application and in whichv Fig. 1 is a side view of the machine with the mold box sides eliminated.

Fig. 2 is an end view of the machine with the movable parts in an altered position.

Figs. 3 and 4 are details of the two forms of sectional rails employed.

Fig. 5 is a top plan view of the machine.

Fig. 6 is a side view of Fig. 2.

Fig. 7 is a sectional view taken on lme 77 of Fig. 1.

Like reference characters denote corresponding parts throughout the several views. I p

The machine comprises a stationary frame comprising the end standards 1, 2 each of which is bifurcated at the lower end to form the legs 3 and formed with a slot 4 at the upper end, the slots 4 of the two standards being aligned. The said standards are connected by the brace rod 5 and each carries a pair of studs 6 that support the sleepers 7 which are spaced apart and on which the table legs 8 rest, said legs carrying the table side rails 9 that carry the table top 10 that is formed with two spaced perforations 11 in alignment with similar perforations formed in the removable plate 12 adapted to lie flat upon the table top.

Referring again to the standards 1, 2 each is provided upon its relatively inner face with a pair of spaced longitudinally extending cleats 13 between which the sliding shoes 14 are disposed that ride against the standards and that are connected by the bridge 15 which is carried by the bars 16 depending from the lift bar '17 that'extends longitudinally of the stationary frame f Sta ar o s n d, said lift" a b ing formed at its ends with the integral handles 18' which, in I one position of the lift bar, are disposed in the slots4 of the standards. By means of the handl es 18 the lift bar, bridge and shoes 14 canbe raised or loweredrelative to the standards.

Movement of the lift bar, bridge and shoes is facilitated by the weights 19 which are'supported by chains 20 that are secured to the bridge and that pass over the pulleys 21 carried by the sleepers 7 the weights tending to raise said lift bar and connections. A rotary bar 22 extends through the standards and is journaled therein, one end of said bar being provided, further, with the anchor block 24 movable with the bar and adapted, in the raised position of the bridge and connections, for supporting engagement with the bridge to retain it in position as clearly shown in Fig. 6. In Fig. 6 the bridge 15 and its connections rest directly upon the upper end of the anchor block 24 and are thereby supported in raised position. In Fig. 1 the bridge and connections are shown in lowered position, the

upper end of the anchor bar 24 being free,

the anchor bar extending up beside the lift bar 17. The bridge can be lowered by disengaging the block from it and lettin it down by means of the handles 18 until t ey engage with the base of the standard slots 4.

Secured to the handles 18 at about their junction with the lift bar, or just inside the standards, are the end rails 25, slotted terminally to adjustably receive the hinged side rails 26, 27 said end and side rails having releasably secured thereto the mold box formed of the end pieces 28 and the sides 29, 30, said pieces 28, 29, 30 being individually secured to the end or side rails aforesaid by means of the angle irons 31, said side pieces 29 and 30 being formed with hook-like extensions 32 disposed beyond the end pieces to receive the latches 33 pivotally secured to the said end pieces by the bolts 34, said side piece 29 being, in this instance, of angular formation and provided with the reinforcement cleats 35.

The end and side pieces of the mold box are individually removable and a variety of shapes and designs may be provided, the inner faces of said pieces being formed with designs such as the design 36, Fig. 5, which it is desired to impressupon the block to be formed. Arranged upon the lift bar 17 and extending up through the aligned perforations in the table top 10 and plate 12 are the posts 37. To form a concrete block the lift bar and connections are raised and supported upon the anchor block 24: as shown in Fig. 6. The soft concrete is now poured into the mold box upon the plate 12 and about the posts 37, said posts serving to perforate the blocks and the mold box sides serving to shape and design the sides of the block, the plate serving to impress a design upon the face of the block.

WVhen the concrete is hard the lift bar and connections are lowered as previously described and the complete block is left upon the plate 12, the sides of the mold box now being wholly below said plate, from which it may be removed for shipment or use.

What is claimed is In a concrete block molding machine, a stationary frame comprising standards formed with aligned slots, a movable frame arranged therewithin, pairs of cleats carried by said stationary frame, sliding shoes carried by said movable frame and dis, posed between said cleats, handles for said movable frame adapted, in one position of the same, for disposition in the aligned slots of the said standards, counter-balance weights connecting said stationary and movable frames whereby movement of the latter is facilitated, an anchor block arranged in said stationary frame for supporting said movable frame in raised position, a movable plate carried by said stationary frame, and a mold box having individually removable sides carried by said movable frame and being Wholly disposed below said removable plate in the lowered position of said frame. 7

Intestimony that I claim the foregoing as my own I have hereto afiixed my signature in the presence of two subscribing witnesses.

CARL HENRIK HOGLUN D. Witnesses: V

THOS. OLArsoN, CARL LODERSTRQM. 

